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The ammonia sensitivity of Pt/GaAs Schottky barrier diodes

AuthorsLechuga, Laura M. ; Calle Martín, Ana ; Golmayo, Dolores ; Briones Fernández-Pola, Fernando
Issue Date15-Sep-1991
PublisherAmerican Institute of Physics
CitationJournal of Applied Physics 70(6): 3348-3354 (1991)
AbstractIn this work a new ammonia gas sensor is presented. Schottky barrier devices, Pt/n‐GaAs, with discontinuous platinum films are sensitive detectors of ammonia gas in a wide temperature range (from room temperature to 150 °C). The effect of parameters such as operation temperature, thickness of the catalytic metal film, background atmosphere, and applied voltage bias on the device sensitivity are investigated. In addition, significant characteristics have been examined including sensitivity limits, linearity of response, and adsorption and desorption kinetics.
Description7 páginas, 12 figuras.
Publisher version (URL)http://dx.doi.org/10.1063/1.349270
Appears in Collections:(IMN-CNM) Artículos
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